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How Many Bags of Topsoil Do I Need?

Convert cubic yards to 0.75 and 2 cubic-foot bags, and see when a bulk truck is cheaper than the garden-center pallet.

Updated August 25, 2026

Bags are just small yards

A cubic yard is 27 cubic feet. Big-box “topsoil” bags in the U.S. are usually 0.75 cubic feet or 1 cubic foot. Landscape “triple mix” and raised-bed bags are often 1.5 or 2 cubic feet. This site’s calculator assumes 2 cubic-foot bags and always rounds up, because you cannot buy 0.4 of a bag.

The live calculator ceils from unrounded cubic feet (yards × 27), not from the one-decimal yard display. For 2 cubic-foot bags, one exact yard is 14 bags (27 ÷ 2 = 13.5, then ceil). For 0.75 cubic-foot bags, one yard is 36 bags.

JobYards2 cu ft bags0.75 cu ft bags
4×8 bed, 8 in0.81129
500 sq ft lawn, 4 in6.284223
1,000 sq ft lawn, 4 in12.3167445
Top-dress 1,000 sq ft at 1.5 in4.663167

The 84-bag figure for 500 sq ft at 4 inches is the same ceiling the live calculator uses. Older pages that showed 83 bags were rounding down a partial bag.

Read the bag, not the front photo

“Garden soil,” “topsoil,” “raised bed mix,” and “compost” are different products. A 0.75 cubic-foot bag labeled topsoil is often sandy fill with a little bark. It is fine for filling a hole under a shrub. It is a poor way to build a lawn. If you need screened bulk soil, the bag aisle is the expensive version of the wrong product.

Weight printed on the bag is not volume. A “40-pound” bag might be 0.75 cubic feet of dry mix or 1 cubic foot of a lighter blend. Always convert from the cubic-foot number on the fine print.

When bags still make sense

Use bags when the total is under about one yard, when a dump truck cannot reach the work, or when you need a specific bagged mix (acid mix for blueberries, a named raised-bed blend). A single 4×8 bed at 8 inches is 11 of the 2-cubic-foot bags. That is a hatchback, not a truck.

Do not bag a new lawn. Two hundred bags is not a DIY savings. It is a logistics problem. The same 6.2 yards in bulk is one small dump and a wheelbarrow.

Price reality

Illustrative garden-center math, not a survey: a 0.75 cubic-foot bag at $3.50 is $126 per cubic yard before tax. Angi and Lawn Love put bulk screened soil far below that (this site’s $15–$25/yd overlap, delivery often $50–$150). A $20 yard plus a $75 delivery fee on a 6-yard order is about $32 per yard delivered. The bag path only wins on tiny jobs or on jobs where delivery is impossible.

If you already have a supplier quote for a pallet of bags, type the total into the calculator’s total-price mode. It will show the implied price per yard so you can compare it with a bulk ticket.

How to run it in the calculator

Enter the area and depth as you would for a bulk order. Read the bag count on the results card. If your bags are 0.75 cubic feet, multiply the 2-cubic-foot bag count by 2.67, or convert yards × 36. Leave waste on if the area has curves. Turn it off for a rectangular bed with plywood sides, where almost nothing is wasted.

Pallets of bags at the store

A store pallet of 0.75-cubic-foot bags is often 36 to 45 bags. That is one yard to a yard and a quarter. If a clerk says “a pallet will do your lawn,” ask which lawn. One pallet top-dresses a few hundred square feet at an inch. It does not build a 4-inch new lawn on 500 square feet (that job is 6.2 yards, five to six of those pallets).

Check whether the pallet wrap says topsoil, garden soil, or manure. Manure pallets are an amendment. Dumping five of them as if they were screened soil will burn a lawn and then shrink.

Carrying math people skip

A 2-cubic-foot bag of damp mix can weigh 40 to 70 pounds. Eleven bags for a 4×8 is doable. Eighty-four bags for the homepage lawn is a medical plan. If you must bag a large bed because of stairs, stage the bags on the landing and empty them in batches so you are not climbing with a full bag each trip.

Cut bags in the bed, not on the lawn. Empty plastic becomes its own disposal job. Flatten and bag the plastic as you go or it will blow into the hedge and you will still be picking it out after the plants are in.

Sources

Numbers on this page are planning figures. Follow the link for the original table or standard. Full list: Sources.

  1. NIST. Handbook 44, Appendix C — General Tables of Units of Measurement. 1 cubic yard = 27 cubic feet. Coverage identity: 27 × 12 = 324 sq ft at 1 inch.
  2. USDA NRCS. Soil Bulk Density / Moisture / Aeration (Soil Quality Kit). Oven-dry bulk density varies by texture; silt loam example ≈ 1.33 g/cm³. Not the same as a wet truckload.
  3. South Dakota State University Extension. Bulk Density is an Indicator of Soil Health. Ideal bulk-density bands by texture (NRCS table). 1 g/cm³ ≈ 62.3 lb/ft³.
  4. Penn State Extension. Lawn Establishment. Minimum 4–6 inches (firmed) of quality topsoil to establish turf; blend into subsoil.
  5. University of Illinois Extension. Preparing Lawn Soil and Site. Aim for six inches or more of well-prepared soil before seed or sod.
  6. University of Nebraska–Lincoln Extension. Establishing Lawns From Sod. Replace topsoil to a minimum of about 4 inches after rough grade; sod often cut 0.25–0.5 in thick.
  7. University of Arkansas System Division of Agriculture. Establishing a Lawn From Sod (FSA-2042). About 19 cubic yards of topsoil make a 6-inch layer over 1,000 sq ft; sample the upper 4–6 inches.
  8. Angi. What Is the Cost of Topsoil? [2026 Data]. National homeowner bands: about $10–$55/yd³ by type; screened loam $18–$26; delivery often $50–$150/trip.
  9. Lawn Love. How Much Does Topsoil Cost in 2026?. Bulk topsoil commonly cited at about $10–$50 per cubic yard, plus delivery.
  10. University of Minnesota Extension. Raised bed gardens. Mounded beds often 6–8 in high. Mix about ½–⅔ topsoil with ⅓–½ plant-based compost. Deeper (1–2 ft) if the bed sits on pavement.
  11. Penn State Extension (York County Master Gardeners). Raised Bed Gardening. A common framed bed is 4 × 8 ft by 1 ft deep — enough for most annual vegetable roots.
  12. U.S. Code of Federal Regulations. 49 CFR 571.110 — Tire selection and rims; motor vehicle. Payload / vehicle capacity weight is the number on the driver’s door-jamb label — not a generic “half-ton.”

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